Sweepstakes/random generation algorithm and code 
Author Message
 Sweepstakes/random generation algorithm and code

Hi everyone!

I am doing a project to create a simple (yet hopefully effective) random
generation program that would simulate the 'drawing of a hat' sweepstakes
kind of thing.

Do any of you guys know something of this sort that is already developed and
that has source code available so I can change it and customize it to my
needs? If so kindly let me know by posting to me privately at

someone else's benefit).


P.S. I have cross posted this email to C++, Java, and Perl newsgroups. I
hope this is ok! :)

Tue, 24 Dec 2002 03:00:00 GMT  
 Sweepstakes/random generation algorithm and code

Thanks for including c.l.s. in the crosspost. But the Smalltalk code is
so uninteresting:

(Deck newCards: 52) shake: 4


Peter van Rooijen

fax, voice mail +31 20 866 2895

Wed, 25 Dec 2002 03:00:00 GMT  
 Sweepstakes/random generation algorithm and code

>             int nSwap = rand() % CARDS;

    Bad, programmer! Bad!
    rand() is weak enough without further skewing its output by favoring
the lower numbers. To get what rand() can deliver in the way of
randomness do this:

 nSwap = (int) (((double)rand() / (double)RAND_MAX) * CARDS);

sma at rtd dot com

Wed, 25 Dec 2002 03:00:00 GMT  
 [ 3 post ] 

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